I use 70% beads in my cooler-dor. That keeps it between 65-70%. It stays in my bedroom, which is between 59 and 65 degrees, and is great for long-term storage, which is what the cooler is generally for.
In my humidor, I use a 50-50 combination of 65% and 70% beads.
I check them with a hygrometer every once in a while, but with beads I just do not stress over humidity. If the cigars consistently feel right every night, no need to worry.